Learn how to redeem a gift card, code, or Office product key and spend your balance at Microsoft Store online, on Windows, or Xbox.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.

Cast to a display from a Windows PC. You can wirelessly connect your PC to a TV, projector, or other kind of external display that supports Miracast. Turn on your TV, projector, or other display. If you're using a Miracast dongle or adapter, make sure it's plugged in to the display.

Add, find, edit, or delete a contact in Outlook. Manage contacts in Outlook. Contact groups, or distribution lists, are a fast way to send a message to multiple email recipients, especially groups you repeatedly contact.

Get free Windows themes from Microsoft to personalize background, colors and sounds for your PC.

You can send an invitation or add people to your Microsoft family to share your benefits. Once they accept the invitation, they can install Microsoft 365 apps on their devices and access their own 1 TB of OneDrive storage by signing in to www.microsoft365.com with their personal Microsoft account.

了解如何加入俱乐部，以便你可以聊天、玩游戏、共享内容以及加入其他玩家的群。. 同时了解如何退出俱乐部。.

Training: Watch these videos to help your school, work, or organization use Microsoft Teams to video conference, work remotely, and become proficient using Teams.

Visit Xbox Support for the latest updates on Xbox Live services, games, and app outages.

If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it. Learn more about avoiding technical support scams.